The Arctic F12 PWM PST Cooling Fan is a high - performance cooling solution featuring a maximum fan diameter of 4.72 inches. It operates at a maximum airflow of 396.5 gal/min and a fan speed of up to 1350 rpm, ensuring optimal cooling for your PC components. The fan utilizes Fluid Dynamic Bearing technology, which not only enhances cooling efficiency but also minimizes noise and vibration, making it ideal for quiet environments. With a 4 - Pin Connector and 4 - Pin Socket, installation is quick and stable, and it is fully compatible with standard cases. The PWM function allows for precise speed regulation based on the motherboard's requirements, ensuring effective cooling while reducing noise levels. This fan is perfect for use in cases, CPUs, and motherboards, providing reliable performance and durability with a limited warranty of 6 years.